A warm front affects
weather when

A warm front forms when a warm air mass pushes into a cooler air mass, shown in the image to the right (A). Warm fronts often bring stormy weather as the warm air mass at the surface rises above the cool air mass, making clouds and storms. ... As the front passes over an area, the clouds become lower, and rain is likely.

A warm front forms when a warm air mass pushes into a cooler air mass?

Explanation:

separation of church and state? not sure what you mean.